substitutions 是 substitution 的複數substitutionKK [ˏsʌbstɪˋtuʃən] /ˌsʌbstɪˈtuʃən/名詞1替代、代替、取代The substitution of butter with oil changed the cake's texture.用油替代奶油改變了蛋糕的口感。2替代品、代用品Honey makes a reasonable substitution for sugar in this recipe.在這道食譜裡,蜂蜜是還不錯的砂糖替代品。3換人、替補運動The coach made three substitutions in the second half.教練在下半場做了三次換人。4代入、代換數學Solve the equation by substitution of the known value.把已知數代入,即可解出這個方程式。